| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 5.43 | 190309072_BOS_NYA |
| Bill Donovan | DET | 4.25 | 190309062_DET_BAL |
| Doc White | CHA | 3.22 | 190309060_CLE_CHA |
| Willie Sudhoff | BAL | 3.09 | 190309072_DET_BAL |
| Eddie Plank | OAK | 2.1 | 190309071_MIN_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.77 | 190309081_PHI_ATL |
| Togie Pittinger | ATL | -4.01 | 190309072_PHI_ATL |
| Henry Schmidt | LAN | -3.01 | 190309072_LAN_SFN |
| Ed Poole | CIN | -1.59 | 190309071_SLN_CIN |
| Mordecai Brown | SLN | -1.06 | 190309071_SLN_CIN |
Based on accumulated WAA for this season up to 1903-09-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.25 | Cy Young | 305.7 | BOS |
| +003+ | 11.25 | Bill Donovan | 262 | DET |
| +004+ | 10.79 | George Mullin | 282.7 | DET |
| +006+ | 10.57 | Doc White | 265.7 | CHA |
| +007+ | 10.34 | Willie Sudhoff | 256.7 | BAL |
| +008+ | 10.29 | Bill Dinneen | 264 | BOS |
| +009+ | 10.02 | Rube Waddell | 324 | OAK |
| +010+ | 8.73 | Eddie Plank | 280.7 | OAK |
| +013+ | 6.95 | Frank Kitson | 225.7 | DET |
| +015+ | 6.78 | Tom Hughes | 204.7 | BOS |
| +016+ | 6.5 | Roy Patterson | 252.7 | CHA |
| +020+ | 6.05 | Red Donahue | 219 | TOT |
| +021+ | 5.92 | Jack Chesbro | 283.3 | NYA |
| +022+ | 5.87 | Ed Siever | 209 | BAL |
| +023+ | 5.53 | Chief Bender | 232.3 | OAK |
| +024+ | 5.33 | Jack Powell | 259.3 | BAL |
| +028+ | 4.65 | Sam Leever | 258 | PIT |
| +039+ | 3.76 | Jesse Tannehill | 220.3 | NYA |
| +041+ | 3.54 | Barney Wolfe | 124.3 | NYA |
| +042+ | 3.46 | Joe McGinnity | 380.7 | SFN |
| +046+ | 3.33 | Highball Wilson | 223.3 | MIN |
| +047+ | 3.31 | Casey Patten | 254 | MIN |
| +048+ | 3.1 | Christy Mathewson | 333 | SFN |
| +054+ | 2.71 | Rube Kisinger | 93.7 | DET |
| +053+ | 2.71 | Patsy Flaherty | 264.7 | CHA |
_